SYDNEY: Australian firefighters battled dozens of bush blazes on Friday as record-breaking hot weather sparked "catastrophic" warnings in two states, just months after the country's worst ever wildfire disaster. Major lightning storms set off about 100 blazes in South Australia alone, most of which had since burned out, according to the state's Country Fire Service. Emergency crews also battled scores of fires in the most populous state of New South Wales, some on the outskirts of Sydney, the Rural Fire Service said. More than a quarter of the state was considered at catastrophic risk and lightning strikes set two homes in the city ablaze.